If called as a function, returns a 2D path of the outline of the mask shape. The roundover can be specified by radius, diameter, height, cut, or joint length. d Diameter of the roundover. h / height ...

The term "involute" refers to the shape of the teeth: the curves of the teeth are involutes of circles, which are curves that optimize gear performance. Figure 1.1.2: The three marked circles are key ...